He lived near the Eureka Stockade and witnessed the battle on 3 December 1854 when the government forces defeated the rebel garrison.

One notable inconsistency in Carboni's account is that he describes the Eureka Flag as made of silk,[1] and the cover of the first edition has an illustration that features diamond-shaped stars.

These incorrect descriptions plagued early Eureka investigators such as Len Fox, with the fragments held by the Art Gallery of Ballarat being of cotton and mohair construction.

"[3] Eureka: From the Official Records has the three-man peace delegation meeting with Robert William Rede on 1 December 1854.

Author Ian MacFarlane notes that Carboni, who accompanied George Black and Father Smyth on this occasion, "suggested in his The Eureka Stockade that this meeting took place on 30 November.